11. Putnam also spent a restless night listening to the sound of power transformers exploding. 12. Electroputere produces railway machinery, power transformers and electrical devices. 13. Today, the magnetic cores of all high-voltage high-power transformers are made of grain-oriented electrical steel. 14. There are less than a dozen power transformer manufacturers in the world, mostly in Europe. 15. Today it makes products as diverse as exit signs, bus fare boxes and power transformers . 16. One of the shells hit a power transformer in Tulkarem, causing a blackout, witnesses said. 17. During the 1950s the company built a large power transformer works at Wythenshawe, near Manchester. 18. The skin effect also reduces the effective thickness of laminations in power transformers , increasing their losses. 19. 1998-Rebels fighting President Laurent Kabila captured a power transformer in western Congo, pitching Kinshasa into darkness. 20. The mechanical engineering plant of " Tochmash " was hit, along with two power transformers nearby.
